ZEJW.htm

NR ZEJW

AU Yoshikawa,H.; Yokoyama,Y.; Ueno,S.; Mitsuda,H.

TI Changes of blood gas in carp, Cyprinus carpio, anesthetized with carbon dioxide

QU Comp. Biochem. Physiol. 1991; 98A(3/4): 431-436

PT journal article

AB 1. Carp were cannulated in the dorsal aorta and the changes in arterial blood gas were examined during 30 min CO2 anesthesia under differing conditions and during the subsequent 60 min recovery period. The mean PaCO2, PaO2, and pHa of the carp (n=50) before anesthesia were 3, 63, and 7.78 mm Hg respectively. 2. All of the carp became anesthetized to Stage II (initial stage of anesthesia) or higher when treated with water containing high concentrations of CO2 (more than pCO2 = 125 mm Hg), while only one carp out of ten reached Stage II at PwCO2 = 100 mm Hg. The mean induction time of anesthesia (Stage II) was 23 (n=1), 20, 12 and 8 min at PwCO2 = 100, 125, 175 and 250 mm Hg, respectively. At Stage II, the mean PaCO2, PaO2 and pHa were 88-146 mm Hg, 181-262 mm Hg, and 6.61-6.66 mm Hg, respectively. 3. At recovery, the mean PaCO2, PaO2, and pHa were 15-31, 63-175 and 6.95-7.20 mm Hg, respectively, the mean recovery time being 8-22 min.

SP englisch

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